kconfig: refer to qt3 if we cannot find qt libraries

We do not support qt4 (yet) so the simple fix was to warn
that qt3 are missing.
The better fix would have been to implment qt4 support
but that has failed so far.

This solves http://bugzilla.kernel.org/show_bug.cgi?id=8277

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

scripts/kconfig/Makefile

@@ -184,8 +184,8 @@ $(obj)/.tmp_qtcheck:
 	  done; \
 	  if [ -z "$$dir" ]; then \
 	    echo "*"; \
-	    echo "* Unable to find the QT installation. Please make sure that"; \
-	    echo "* the QT development package is correctly installed and"; \
+	    echo "* Unable to find the QT3 installation. Please make sure that"; \
+	    echo "* the QT3 development package is correctly installed and"; \
 	    echo "* either install pkg-config or set the QTDIR environment"; \
 	    echo "* variable to the correct location."; \
 	    echo "*"; \